Detections
Analytics

SCA: security update for pymdown-extensions (GHSA-r6h4-mm7h-8pmq)

medium Tenable Self-Hosted Container Security Plugin ID 436404

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - PyMdown Extensions is a set of extensions for the `Python-Markdown` markdown project. Versions prior to
 10.16.1 have a ReDOS bug found within the figure caption extension (`pymdownx.blocks.caption`). In systems
 that take unchecked user content, this could cause long hanges when processing the data if a malicious
 payload was crafted. This issue is patched in Release 10.16.1. As a workaround, those who process unknown
 user content without timeouts or other safeguards in place to prevent really large, malicious content
 being aimed at systems may avoid the use of `pymdownx.blocks.caption` until they're able to upgrade.
 (CVE-2025-68142)

See Also

https://github.com/advisories/GHSA-r6h4-mm7h-8pmq

Plugin Details

Severity: Medium

ID: 436404

Version: Revision 1.110

Type: Local

Family: SCA Checks

Published: 12/17/2025

Updated: 6/29/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.2

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2025-68142

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 2.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/16/2025

Vulnerability Publication Date: 12/16/2025

Reference Information

CVE: CVE-2025-68142